dhc
Contributor
Contributor

How to Track Replication for Bandwidth Estimation?

Hello, I'm trying to look at the replication history (using vSphere Replication) to calculate bandwidth requirements.  Currently the "Protected" and "Recovery" sites are side-by-side.  Once the bandwidth requirements are determined,  the link ordered and installed, the "Recovery" Site (Hosts, SAN) will be moved to the permanent location in another state.

1. How can I control event tracking per VM so that I can capture 48 hours of delta information?  When I have an RPO of 15 minutes, it only keeps a few hours visible (Home> Inventory>VMs and Templates - <VMNAME>-Tasks&Events tab.

Delta completed (345729500 bytes transferred).info8/27/2012 9:03:59 AMvTESTVMSystem
Delta started by VR Scheduler.info8/27/2012 9:00:59 AMvTESTVMVR Scheduler

NOTE: The number of events listed can be adjusted by opening the VI Client and going to menu Edit>Client Settings, going to the Lists tab and changing the page size to 1000.


2. Is there a CLI method to export this Event information for each VM being replicated?

3. Is there a way to query this directly from the SQL Server?

4. Is this captured in a log I can export?

Thanks!

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4 Replies
mal_michael
Commander
Commander

Hi,

1. I don't believe this is possible.

2. This can be done with PowerCLI (get-vievent cmdlet). There are plenty of examples on the communities / internet

3. Possible, but not recommended.

4. I don't know.

Michael.

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dhc
Contributor
Contributor

Thank you for your response.

I looked for PowerCLI commands to export the events, but could not seem to find the ones that would export the number of bytes replicated with its timestamp.

Do you have a specific example in mind?

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mal_michael
Commander
Commander

Something like this:

$events = get-vm "vTESTVM" | get-vievent -start ((get-date).addhours(-48)) -finish (get-date) | where{$_.fullFormattedMessage -like "*bytes*"}}

Didn't test it, but should work.

Michael.

dhc
Contributor
Contributor

Thank you, that example was terrific.  I modified it so that I could get a longer history (the default 100 results showed me less than 12 hours of data).  If I was better at parsing, I would be able to extract just the timestamp and number of bytes to make it really easy.

get-vm vGreatplains | get-vievent -start ((get-date).addhours(-96)) -finish (get-date) -maxsample 1000 | where {$_.fullFormattedMessage -like '*Delta Completed*'} | select CreatedTime, FullFormattedMessage | export-csv c:\temp\vGreatplains_29-Aug-12_deltacompletions.csv

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